Alloy 400 (UNS N04400 / WNR 2.436) is a solid-solution strengthened nickel-copper alloy renowned for its high mechanical strength, excellent toughness, and superior corrosion resis...

Alloy 400 (UNS N04400 / WNR 2.436) is a solid-solution strengthened nickel-copper alloy renowned for its high mechanical strength, excellent toughness, and superior corrosion resistance across a wide temperature range. It cannot be hardened by heat treatment but gains strength through cold working. This alloy offers outstanding performance in both fresh water and seawater environments, resisting stress-corrosion cracking and oxidation. Its composition provides good weldability and fabricability, making it a versatile engineering material for critical applications where reliability is non-negotiable. Available in various forms including seamless tubes, coiled tubing, and cold-worked products, it meets numerous international standards including ASTM B163, ASTM B165, and AMS 4574.

This alloy serves vital roles across multiple heavy industries including chemical processing, oil and gas, marine engineering, and power generation. In chemical plants, it handles sulfuric and hydrofluoric acids in alkylation units. Marine applications utilize it for propeller shafts, pump components, and underwater fasteners due to its superb seawater resistance. The oil and gas industry specifies Alloy 400 for crude petroleum stills, process vessels, and piping systems. Nuclear power plants employ it in core cooling tubes and heat exchangers where reliability under radiation and high temperatures is critical. Its non-magnetic properties make it valuable for electrical and electronic components in specialized applications.

For business decision-makers, Alloy 400 delivers exceptional value through reduced maintenance costs, extended equipment lifespan, and minimized downtime in corrosive environments. Its reliability translates to fewer replacements and lower total cost of ownership compared to alternative materials. The alloy's compliance with international standards ensures quality consistency and global acceptance. These factors make Alloy 400 a smart investment for businesses prioritizing operational safety, efficiency, and long-term performance in challenging industrial settings.

Key Features:
- High strength and toughness maintained from sub-zero to elevated temperatures
- Excellent resistance to corrosion by seawater, acids, alkalies, and salt solutions
- Good weldability and fabricability for component manufacturing
- Non-magnetic properties suitable for electrical and electronic applications
- Compliance with international standards including ASTM B163, ASTM B165, and AMS 4574

Benefits:
- Reduced maintenance costs and extended equipment lifespan in corrosive environments
- Minimized downtime and operational disruptions in harsh conditions
- Lower total cost of ownership compared to alternative materials
- Enhanced operational safety through reliable performance under pressure
- Global acceptance and quality consistency through international standard compliance